Stereoscopic viewing, made possible by the overlap of Apollo mapping camera frames, does wonders for some lunar scenes. When viewed monoscopically, these photos taken at high Sun illumination in Mare Fecunditatis show bright patterns of craters and narrow mare ridges. Viewed stereoscopically, they reveal the relative depths of the craters; the sharp relief of the narrow ridges; an unsuspected broad, high swell between the parallel "ranges" of narrow ridges; and the even more surprising differences in elevation between mare surfaces in the left (west) and right parts of the photograph. The elevations of the mare surfaces probably mimic the variable depth of the buried floor of the Fecunditatis basin. The center of the basin, presumably the deepest part, is located near the left of the picture, where the mare surface is lowest. The large crater Messier G is 14 km in diameter.   -D.E.W.